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https://bugzilla.mozilla.org/show_bug.cgi?id=721569
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  <title>Test for Blob constructor (Bug 721569)</title>
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  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=721569">Mozilla Bug 721569</a>
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<div id="content" style="display: none">
  
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<pre id="test">
<script class="testbody" type="text/javascript;version=1.7">
"use strict";
/** Test for Bug 721569 **/
var blob = new Blob();
ok(blob, "Blob should exist");

ok(blob.size !== undefined, "Blob should have a size property");
ok(blob.type !== undefined, "Blob should have a type property");
ok(blob.slice, "Blob should have a slice method");

blob = new Blob([], {type: null});
ok(blob, "Blob should exist");
is(blob.type, "null", "Blob type should be stringified");

blob = new Blob([], {type: undefined});
ok(blob, "Blob should exist");
is(blob.type, "", "Blob type should be treated as missing");

try {
blob = new Blob([]);
ok(true, "an empty blobParts argument should not throw");
} catch(e) {
ok(false, "NOT REACHED");
}

try {
blob = new Blob(null);
ok(false, "NOT REACHED");
} catch(e) {
ok(true, "a null blobParts member should throw");
}

try {
blob = new Blob([], null);
ok(true, "a null options member should not throw");
} catch(e) {
ok(false, "NOT REACHED");
}

try {
blob = new Blob([], undefined);
ok(true, "an undefined options member should not throw");
} catch(e) {
ok(false, "NOT REACHED");
}

try {
blob = new Blob([], false);
ok(false, "NOT REACHED");
} catch(e) {
ok(true, "a boolean options member should throw");
}

try {
blob = new Blob([], 0);
ok(false, "NOT REACHED");
} catch(e) {
ok(true, "a numeric options member should throw");
}

try {
blob = new Blob([], "");
ok(false, "NOT REACHED");
} catch(e) {
ok(true, "a string options member should throw");
}

/** Test for dictionary initialization order **/
(function() {
  var o = {};
  var p = {type: "text/plain", endings: "transparent"};
  var called = [];
  function add_to_called(n) {
    called.push(n);
    return p[n];
  }
  ["type", "endings"].forEach(function(n) {
    Object.defineProperty(o, n, { get: add_to_called.bind(null, n) });
  });
  var b = new Blob([], o);
  is(JSON.stringify(called), JSON.stringify(["endings", "type"]), "dictionary members should be get in lexicographical order");
})();

let blob1 = new Blob(["squiggle"]);
ok(blob1 instanceof Blob, "Blob constructor should produce Blobs");
ok(!(blob1 instanceof File), "Blob constructor should not produce Files");
is(blob1.type, "", "Blob constructor with no options should return Blob with empty type");
is(blob1.size, 8, "Blob constructor should return Blob with correct size");

let blob2 = new Blob(["steak"], {type: "content/type"});
ok(blob2 instanceof Blob, "Blob constructor should produce Blobs");
ok(!(blob2 instanceof File), "Blob constructor should not produce Files");
is(blob2.type, "content/type", "Blob constructor with a type option should return Blob with the type");
is(blob2.size, 5, "Blob constructor should return Blob with correct size");


let aB = new ArrayBuffer(16);
var int8View = new Int8Array(aB);
for (var i = 0; i < 16; i++) {
  int8View[i] = i+65;
}

let testData = 
 [
    // Test 3 strings
    [["foo", "bar", "baz"], {},
                            [{start: 0, length: 9, contents: "foobarbaz"},
                             {start: 0, length: 3, contents: "foo"},
                             {start: 3, length:6, contents:  "barbaz"},
                             {start: 6, length: 3, contents:  "baz"},
                             {start: 6, length: 6, contents: "baz"},
                             {start: 0, length: 9, contents:  "foobarbaz"},
                             {start: 0, length: 11, contents: "foobarbaz"},
                             {start: 10, length: 5, contents: ""}]],
    // Test string, Blob, string
    [["foo", blob1, "baz"], {},
                            [{start: 0, length: 3, contents:  "foo"},
                             {start: 3, length: 8, contents:  "squiggle"},
                             {start: 2, length: 2, contents:  "os"},
                             {start: 10, length: 2, contents: "eb"}]],
    // Test blob, string, blob
    [[blob1, "foo", blob1], {},
                            [{start: 0, length: 8, contents:  "squiggle"},
                             {start: 7, length: 2, contents:  "ef"},
                             {start: 10, length: 2, contents: "os"},
                             {start: 1, length: 3, contents:  "qui"},
                             {start: 12, length: 3, contents: "qui"},
                             {start: 40, length: 20, contents: ""}]],
    // Test blobs all the way down
    [[blob2, blob1, blob2], {},
                            [{start: 0, length: 5, contents:  "steak"},
                             {start: 5, length: 8, contents:  "squiggle"},
                             {start: 13, length: 5, contents: "steak"},
                             {start: 1, length: 2, contents:  "te"},
                             {start: 6, length: 4, contents:  "quig"}]],
    // Test an array buffer
    [[aB, blob1, "foo"], {},
                            [{start: 0, length: 8, contents:  "ABCDEFGH"},
                             {start: 8, length:10, contents:  "IJKLMNOPsq"},
                             {start: 17, length: 3, contents: "qui"},
                             {start: 4, length: 8, contents:  "EFGHIJKL"}]],
    // Test an ArrayBufferView
    [[int8View, blob1, "foo"], {},
                            [{start: 0, length: 8, contents:  "ABCDEFGH"},
                             {start: 8, length:10, contents:  "IJKLMNOPsq"},
                             {start: 17, length: 3, contents: "qui"},
                             {start: 4, length: 8, contents:  "EFGHIJKL"}]],
    // Test a partial ArrayBufferView
    [[new Uint8Array(aB, 3, 5), blob1, "foo"], {},
                            [{start: 0, length: 8, contents:  "DEFGHsqu"},
                             {start: 8, length:10, contents:  "igglefoo"},
                             {start: 4, length: 8, contents:  "Hsquiggl"}]],
    // Test transparent line endings
    [["foo\r\n", "bar\r", "baz\n"], { endings: "transparent" },
                            [{start: 0, length: 5, contents:  "foo\r\n"},
                             {start: 5, length: 4, contents:  "bar\r"},
                             {start: 9, length: 4, contents: "baz\n"}]],
    // Test transparent line endings when the second argument is omitted
    [["foo\r\n", "bar\r", "baz\n"], undefined,
                            [{start: 0, length: 5, contents:  "foo\r\n"},
                             {start: 5, length: 4, contents:  "bar\r"},
                             {start: 9, length: 4, contents: "baz\n"}]],
    // Test native line endings
    [["foo\r\n", "bar\r", "baz\n"], { endings: "native" },
                            navigator.platform.indexOf("Win") != -1 ?
                            [{start: 0, length: 5, contents:  "foo\r\n"},
                             {start: 5, length: 5, contents:  "bar\r\n"},
                             {start: 10, length: 5, contents: "baz\r\n"}] :
                            [{start: 0, length: 4, contents:  "foo\n"},
                             {start: 4, length: 4, contents:  "bar\n"},
                             {start: 8, length: 4, contents: "baz\n"}]],
    // Test type coercion of a number
    [[3, int8View, "foo"], {},
                            [{start: 0, length: 8, contents:  "3ABCDEFG"},
                             {start: 8, length:10, contents:  "HIJKLMNOPf"},
                             {start: 17, length: 4, contents: "foo"},
                             {start: 4, length: 8, contents:  "DEFGHIJK"}]]
 ];

let testCounter = 0;

function doTest(data) {
  testCounter++;

  var [blobs, options, tests] = data;

  function runTest(test) {

    let blob;
    if (options !== undefined) {
      blob = new Blob(blobs, options);
    } else {
      blob = new Blob(blobs);
    }
    ok(blob, "Test " + testCounter + " got blob");
    ok(blob instanceof Blob, "Test " + testCounter + " blob is a Blob");
    ok(!(blob instanceof File), "Test " + testCounter + " blob is not a File");

    let slice = blob.slice(test.start, test.start + test.length);
    ok(slice, "Test " + testCounter + " got slice");
    ok(slice instanceof Blob, "Test " + testCounter + " slice is a Blob");
    ok(!(slice instanceof File), "Test " + testCounter + " slice is not a File");
    is(slice.size, test.contents.length,
       "Test " + testCounter + " slice is correct size");

    testFile(slice, test.contents, "Test " + testCounter);
  }
  if (Array.isArray(tests)) {
    tests.forEach(runTest);
  } else {
    try {
      let blob = new Blob(blobs, options);
      ok(false, "NOT REACHED");
    } catch (e) {
      is(e.name, tests, "Blob constructor should throw " + tests);
    }
  }
  SpecialPowers.gc();
}

SimpleTest.waitForExplicitFinish();
testData.forEach(doTest);

</script>
</pre>
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